87764-57-6 Methanesulfonamide, N-(4-(9-acridinylimino)-3-methoxy-2,5-cyclohexadien-1-ylidene)- N(1')-Methanesulfonyl-N(4')-(9-acridinyl)-3'-methoxy-2',5'-cyclohexanediene-1',4'-diimine m-Aqdi